Introduction: The Importance of Laser Optics
In laser processing systems, laser optics play a crucial role in determining the precision, consistency, and efficiency of your application. High-quality optics ensure that the laser beam is delivered to the target surface with minimal distortion and optimal focus.
Two of the most critical optical components are the F-theta Lens-Flat Field and the F-theta Lens -Telecentric. These lenses are designed to control the laser beam path and focus, enabling high-precision marking, engraving, or cutting over large areas.
F-theta Lens – Flat Field
The F-theta Lens-Flat Field is widely used in galvanometer-based scanning systems. It is designed to keep the focal plane flat across the entire scan field, ensuring uniform spot size and energy distribution.
Key Features:
Consistent focal depth across the scanning area
Available for various wavelengths (355nm, 532nm, 1064nm, etc.)
High transmission optical coatings
Suitable for large-area marking and engraving
Typical Applications:
Laser marking of metals, plastics, and ceramics
High-speed barcode and QR code marking
PCB labeling and industrial parts identification
Surface engraving and etching
This type of lens offers excellent versatility and reliability in most general-purpose laser processing applications.
F-theta Lens – Telecentric Design
The F-theta Lens -Telecentric takes precision a step further. Unlike standard lenses, this design ensures that the laser beam remains perpendicular to the working surface at all positions within the field. This eliminates angular distortion and enables extremely accurate results.
Advantages:
Beam remains orthogonal across the scan field
No focal shift at the edges of the working area
Ideal for micro-machining and precision laser tasks
Enhanced depth-of-focus and minimal parallax
Ideal For:
Semiconductor processing
Fine marking of microelectronic components
Laser trimming of resistors and thin-film circuits
Surface structuring with sub-micron accuracy
The telecentric design is especially beneficial in applications where consistent beam quality and edge-to-edge accuracy are non-negotiable.
Product Comparison Table
| Feature | Flat Field Lens | Telecentric Lens |
|---|---|---|
| Focal Plane | Flat | Flat & Perpendicular |
| Beam Entry Angle | Varies across field | Always 90° |
| Application Range | General marking/engraving | High-precision micromachining |
| Distortion at Field Edges | Minor | None |
| Price | Moderate | Higher (for precision) |
Why Choose Our Laser Optics?
Precision Engineering – Manufactured using high-grade optical glass and advanced coatings
Wide Compatibility – Supports multiple laser wavelengths and system types
Custom Options – Customizable scan fields, focal lengths, and coatings
Stable Performance – Designed for long-term industrial use under varying conditions
Ready to Integrate – Compatible with major laser scan heads and processing systems
Conclusion
Whether you’re looking to enhance the capabilities of your laser marking, engraving, or micro-processing setup, selecting the right laser optics is essential. Our F-theta Lens-Flat Field and F-theta Lens -Telecentric solutions offer the accuracy, consistency, and optical performance required in demanding industrial environments.
Contact us now to learn more about available specifications, request product drawings, or receive expert recommendations for your specific application.
